Terminals Of Ecu

Check Power Window Regulator Master Switch Assy

Fig 1: Identifying Terminals Of ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Disconnect the D12 master switch connector and check the voltage and continuity of each terminal of the wire harness side connector.
  Standard:
  
  Fig 2: Master Switch Connector Terminal Voltage And Continuity Reference Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, there may be a malfunction on the wire harness side.
2. Reconnect the D12 master switch connector, and check the voltage of each terminal of the connector.
  Standard:
  
  Fig 3: D12 Master Switch Connector Terminal Voltage Reference Table
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, the master switch may be defective.
3. Check the illumination.
  1. When the ignition switch is turned to ON from OFF with the connector connected, check that the illumination (LED) AUTO will light up.